Michael Hudson wrote: > I'm curious about this bit of code from Lib/distutils/sysconfig.py: > > ,----------------------------------------------------------------------- > | # python_build: (Boolean) if true, we're either building Python or > | # building an extension with an un-installed Python, so we use > | # different (hard-wired) directories. > | > | argv0_path = os.path.dirname(os.path.abspath(sys.executable)) > | landmark = os.path.join(argv0_path, "Modules", "Setup") > | if not os.path.isfile(landmark): > | python_build = 0 > | elif os.path.isfile(os.path.join(argv0_path, "Lib", "os.py")): > | python_build = 1 > | else: > | python_build = os.path.isfile(os.path.join(os.path.dirname(argv0_path), > | "Lib", "os.py")) > | del argv0_path, landmark > `----------------------------------------------------------------------- > > Well, curious is a bit weak. It's broken, and breaks (eg) the snake > farm's builds (because that is set up to build python in a directory > far away and over the hills from the source directory). > > Why isn't it just > > ,----------------------------------------------------------------------- > | # python_build: (Boolean) if true, we're either building Python or > | # building an extension with an un-installed Python, so we use > | # different (hard-wired) directories. > | > | argv0_path = os.path.dirname(os.path.abspath(sys.executable)) > | landmark = os.path.join(argv0_path, "Modules", "Setup") > | > | python_build = os.path.isfile(landmark): > | > | del argv0_path, landmark > `----------------------------------------------------------------------- > > ? What cases does that get wrong? I'd have changed it already, but I > have this feeling I must be missing something. Is Modules/Setup a landmark on all Python build platforms, e.g. on Macs, Windows and other non-Unix platforms as well ? -- Marc-Andre Lemburg CEO eGenix.com Software GmbH _______________________________________________________________________ eGenix.com -- Makers of the Python mx Extensions: mxDateTime,mxODBC,... Python Consulting: http://www.egenix.com/ Python Software: http://www.egenix.com/files/python/
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